CVE-2020-10713

 

Published at: - 30-07-2020 03:15

Last modified: - 16-11-2022 05:06

Total changes: - 3

Description

A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1825243
• VU#174059-Third Party Advisory, US Government Resource
• https://security.netapp.com/advisory/ntap-20200731-0008/
• USN-4432-1-Third Party Advisory
• 20200804 GRUB2 Arbitrary Code Execution Vulnerability-Third Party Advisory
• openSUSE-SU-2020:1169-Mailing List, Third Party Advisory
• openSUSE-SU-2020:1168-Mailing List, Third Party Advisory
• https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
• [oss-security] 20200729 multiple secure boot grub2 and linux kernel vulnerabilities-Mailing List, Third Party Advisory
• DSA-4735-Third Party Advisory
• https://kb.vmware.com/s/article/80181
• https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713
• GLSA-202104-05-Third Party Advisory

 

Keywords

NVD

 

CVE-2020-10713

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures